Corner-binding.



LE. DAVIDSON.

` CORNER BINDING. APPLICATION FILED FBB.1,1913.-

1,08?,530 .---Patentea Feb.17,1914.

lculty of securing the Unirse sra'rns PATENT onirica.

JOHN E. DAVIDSON,

AUTHUR N. HOOD,

NIGHTIN'GALE, OF BOSTON, MASSACHUSETTS.

CORNER-BINDING.

Speeiication of Letters Patent.

Patented Feb. 17,1914.

Application filed February 1, 1913. Serial N o. 745,581.

To all 2li/10m it may concern:

Be it known that I, JOHN E. DAVIDSON, a citizen of the Dominion of Canada., residing at Boston, county of Suffolk, State of 'Massachusetts, have invented a certain new and useful Improvement in Corner- Bindings, of which the following is-a specitication, reference being had therein to the accompanying drawings. I

My invention relates to corner bindings which are used to protect and secure the meeting edges of sections of material which are joined together at' an angle to each other, and is particularly intended to provide an improved corner binding for protecting securing and 'reinforcing the corners of boxes and the like in which such qualities as lightness, strength and durability are especially desirable.

Many boxes su'ch for example as tea boxes are made preferably from thin light material, generally wood. Others are made from laminated ,Wood, that is sheets or veneers which are laid and secured together. and which when properly constructed form.

material for boxes. Such thin light wood are howbecause of the ditlirelatfively thin ninterial 'together lirmly and strongly at the coi'- ners. When the corners are secured with t-he aid of a strong corner binding which protects and reinforces them, a strong light box is produced which is admira-bly adapted for a large variety of uses. Especially is this the case when the sides of the box are formed from built-up veneers as hereinabove referred to. i

My invention consists in a molded corner binding made fromv laminated wood hav-` ing the grain of the various veneers or sheets arranged in crossed relation and secured together and permeated by cement, all as a light and strong boxes made from ever relatively weak,

- will be clearly understood from the following description taken in connection with the drawings, forming a part hereof.

The novel features of the invention are pointed out and clearly defined in the claimsA `at the close of the specification.

Inthe drawings, Figure 1 is a. perspec# `tive of a corner binding embodying my ining embodying my invention.

to the corner of a box. Fig. 3 is a transverse section of a thicker and heavier corner bind- Fig. 4 is a transverse section of a. strip of laminated material fromwhic h the corner bindin is formed, before the same has been molde to shape. I

The nature and character binding embodying this invention will be readily understood from a description 0f the way in which it isproduced. K

l first form a strip or sheet of laminated Wood, which consists of two or more, preferably three,- sheets or laminae which latter may he readily formed by the use of a veneer machine 'of well known construction, from properly tempered bolts or logs of wood. A moist sheet as it comes from the log is placed on a table and coated with a rather heavy coating of cement; another sheet is then laid on the rst one, preferably with the grain of the wood in crossed relation to the grain ot the first sheet. This Second sheet is also coated with cement, and a third sheet is placed on top of the second sheet with the grain of the wood running parallel with that of the first sheet. A strip thus built up is shown in cross-section in Fig. 4 and I have there designated the respective layers as 1. Q and 3. From the moist sheets of wood which are thus built imposed the one on the other a strip is cut of a. width equal to the width required for a. given corner binding, which is to be formed, and of a suitable length. This moist sheet is then subjected to heat and 'pressure in a molding machine having cooperating convex and concave molds corresponding to the interior and exterior shape of the co-rner binding. The material is thus molded to the shape desired, such for example as shown Fig. Q. By the heat and pressure the ccmcnt is caused to permeate the wood and t0 secure the sheets or lamin firmly together. 'lhc strip is allowed to dry under the' heut and pressure of the molds and the cement becomes set and fixed.

The number of plies or sheets of wood employed may. as will be obvious, be increased if greater thickness or strength is desired, and the thickness of the sheets used ma also be `varied in accordance with the iesu t desired. In Figs. 1, 2 and 4 I have shown a corner binding composed of three lamin of .a cornerl up or super- 0F BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-THIRD TO 0F NEWTON, MASSACHUSETTS, AND ONE-THIRD TO JOI-IN T.

tuo

orsheets, while Fig. Sl'the corner binding shown is composed oi': live sheets.

4section as shown Figs. f2 and 3. Since the usual boxto which such a corner strip is applied has what are termed square cor ners the interior of the corner binding forms a sharp angle as shown at 6 so that it will correspond with and accurately tit the sharp edge el the corner of the box formed by the sides thereof, while the eXn terior of the corner binding is curved at the corner as shown" at vIt is important that the binding lit snugly and tightly over the corner of the box to y.which it is applied and so that the inner surtace of the binding which overlies the meeting edges of the sides of the box will lie closely in contact with the said sides. T his greatly increases-fthe strength ot the whole structure. lt isv also important that the exterior corner d should be rounded since this rounded shape very greatly increases the strength of the corner against crushing strains which would tend to break it down or crush it in and a rounded exterior as at el is for purposes of handling the like much more desirable than a sharp exterior corner would be.

As hereinabove noted the compressed and molded sheets or laminae oit' ywood are not only :lirmly united and secured together by cement but the cement permeates the Wood under the heat and pressure of molding. lll/'hen the moist built-up strip haring cement between the layers is subjected to the molding operation the heat and pressure expels the moisture and the cement in large measure replaces it and then dries and becomes set and tired, filling the interstices of the Wood more or less completely. A corner binding strip thus formed is largely homogeneous and is ditlerent .in character from the wood from which the sheets or `veneer mensen are formed. lt is much tougher and stronger than Wood, will not split, crack or fracture so easily and will resist a much greater breakingl or crushing strain.

The corner binding is preferably secured in position on the box corners by means of clenched staples T, Fig. 2, although other equivalent securing devices as clenched nails 'or the like may be employed.

1What l claim is:

l. 'A corner binding, for boxes or the like consisting of a plurality of thin layers of wood, with the grain of the Wood in the different layers in crossed relation, said layersl ,being permeated with and hound togetherby cement and molded to form a right angularl structure the interior of which is shaped longitudinally to lit closely the corner of a box.

2. 'corner binding, for boxes or the like, consisting of a plurality of thin layers of wood, with the grain of the Wood in the different layers in crossed relation, said layers being permeated with and bound together by cement and molded to form a right angular structure the interior of which is shaped longitudinally to fit closely the corner of a box, and the exterior of which structure has a rounded corner.

3. A corner binding, for boxes or the like, consisting of a plurality of thin layers of n'ood, with the grain of the Wood in the different layers in crossed relation, said layers being permeated with and bound togetherv by cement and molded to form a right, angular structure the interior of which is a sharp right angle to fit closely the corner of a boli, and the exterior of which structure hasl a rounded corner.

ln testimony whereof I affix my signature,

in presence of two witnesses.

JOHN E. DAVIDSN. 'Witnesses WILLIAM A. Hicieron, .limon H. MoRRrsoN. 

